Push-button.



C. W. WACHTEL.

PUSH BUTTON. APPLICATION FILED Nov. 231907.

'Patented sept.29,190s.

INV TOH UNITED STATES "PATENrorricn eCH-ARLES W. WACHTlILy, OF JAMAICA,vNEW "ital-900,006;` specification of4 T0: Yfill when. #may blowen:

, yBe itlgnow'n'thatfl,CHRLEsW. WAUH'TEL, a v y citizen of f the. United,States, residing at Jama1ca,.jcounty of Queens, State of New Y 'ofrk,haveinventedce'rtain .new and useful ,rolvementsin.Pushduttona ofwhichthe i fol owing' is Aa specifica-tion, reference being had thereinlto the accompanying., drawings, inlwhich-Y 'y l Figure 1 is aside'elevation of the push button;l Fig.` 2 a horizont-al sectional'view on the line Vof '12,1 Fig; 3a, lan 'view of tl`ie .bas'el piece;Fig. 4 a vertica transverse sectional view of the push button; Y andFig. 5

ing vthe contacts.;

a similar view of the supporting plate carry- -piece of similarmaterial. These jcontacts are very unsatisfactoiy for. the reason thatthe slightest accumulation offdustand dirt between the two pieces ofmetal interrupts the 'current and makes an incom lete circuit. Anotherobjection is that the at pieces of metal soon lose their resilience andbecome useless, particularly if they are exposed to changing atmos hericconditions.

Referring to tlie various parts byl numerals, 1 designatesa base platehaving the upstanding annularflange 2 and an inward extending annularflange 8. Fitting within ,the upstanding flange and resting on theflange 3 is a supporting plate 4 of hard fiber or other insulatingmaterial. The flange 3 'is provided with alug 5 which enters an openingin the plate 4 to prevent the rotation of the plate, as is common inthis'class of device.

Secured to `the plate'4 are two contacts 6 leach of which consists -of-a screw having a head and a shank 8 which is threaded through theplate.: The screws are laced a suitable distance apart and their heat scons/titute thecontact points. On the Shanks S are secured binding nuts9 which not only serve to secure the circuit Wires in place, but als4serve to securely hold thescrews to thej ApplicatiodledvNovemberg,:1907. Serial CNIo. 403,440;

insulating plate. Pivoted in a rslotin the 1 l' riferi-nunon,

Letters Patent.

vplate 4 -is a 'said arm be 4 away from the plate by a spring 1'1whi'chis confined between the arm; and the plate.

The contact-'arm is provided atitsfree end" With acontact-head 12 whichis V-shaped in transverse section and is adapted to fit between thescrew heads 7, the point of the con- `tact-head being between the headsand the lnclilned `sides 13 thereof engaging the screw eac s.

r VPatiented Sept. 291908. p

iovable contact-armor lever 10, I ig normally pressed'outward or.

It will be readily seen that the contact head. i

in striking down between -the ,screw has .al wiping contact with saidheads so that ythe points of contact will be at all times bright Vandclean and free from dust and dirt. The

contact arm vis pivoted in such manner that it will have asligh'tlateral movem/ent'onf its pivot so that the contact head'will, unless itis pressed down very carefully between' the two screw'heads, contactwith one of the screw.

heads before engaging the other. lThis-will give a long sliding contactbetween the 'two parts, insuring brlght', clean contact su rfaces.

The contactl arm and head are substantial-V jin form so thatjthey can-be securely pivoted in the plate and` cannot be'linjuned in;y any1.:

way' by weather. y v I By providing the clamping screws, andarrangingthem to serve as a means for binding the circuit wiresin placeas well as the contact members, the device is very simple of manufactureand is very durable so that it will last'in'definitely.' l i Theinclosing cap 14 is provided with slots 15 having the outwardly lnclinedsurface 16. Theflange 2 of. the base plate is provided 'with pins orlugs 17 which are adapted to enter the slots 15 and to engage the camsurface 16 whereby, upon lthe partial rotation of the cap 14, it will besecurely clamped to the basel By this means I..avoid the use of.

plate.. threaded connections between the fiange 3 and the cap. The .pushbutton 18 is held ioo inplace by the cap its inner side resting upon l.

button ;y one .that can belreadily asseni led. Having thus ,described myinvention, what Iclnin'i as new and A i desire to secure by LettersPatent, is:-

1. -i push button comprising a pluteof insulating material, two contactpoints :1r-

ranged thereon, means for connecting circuit 52o Wires'to said screws, aContact lever pivoted on said plate, and provided with an angular 'Yfrom the screw heads.

wires to said oints, and a Contact lever? tact points carried bytheplate, s aid contact 5 lever be1,ng normally held away from the contactpoint-s.A

32.51A push button comprising an linsulating pla-te a` air of" screwsthreaded through said plate," binding nuts threaded on said: screwsandserving to connect the circuit wires there- 1t0', 'the heads-of lsaidscrews forming contact v p oint's, a ivoted contact. lever formedwith-acontact ead adapted to strike between the two. Contact 'points and toengage them, and means Jfor normally holding the contact lever 'awayfrom said Contact' points.

.3. A push butt-on comprising a plate of insulation, a pair of screwsconnected. thereto, the 'heads of said screws forming contact points,lmeans for connecting the circuit head adapted to strikebetween theheads of the screws, and to, engage the same, and meansfornormally'holding said lever away 4. 'A push button comprising-aninsulating plate, a pair of vscrews threaded through said l 4pjlateandprovidedwith headsforiing con- 13o' screws, a prvoted contact levercarried by.

taetV point-s, "binding nuts. threaded on said said-plate' andformedwith a transverse contact ead at" its free end, said head being fV-shaped in cross-section, the lever being:y so

garranged that the Contact head will strike A' '-between the two screwheads and engage the same, and a spring for normally holdinor theContact head away from the screw'heat s.

5. A push button comprising a base late having anupstanding ila-nwe, aplate of msulat-ion inclosed within said flange, a pair of screwscarried by said plate of insulation, thel heads of t-hescrews formingcontact point-s, .,1-

a pivoted lever carried by the plate of insulation and provided with a.transverse V- shaped Contact head-adapted to strike between the screwheads and to engage the same,` means fornornlally holding `the leveraway from the screw heads, an inclosing cap provided. with slots, onewall of said slotI being cam-shaped and diametrically opposite pinsextending radially from the upstanding ila-nge of the base plate andadapted to iit in the slot-s of the cap, for the purpose set forth. 6. Apush button comprising a supporting plate, two contact points arrangedthereon and insulated from each other, means for connecting' circuitwires to said points, a contact lever pivoted on said plate and formedwith an angular head portion adapted to fit between and engage thecontact points carried by the )la-te, and a spring for normally holdingsaid contact lever away froml the contact points In testimony'whereof Ihereunto aHiX my signature in the presence of two witnesses this 21stdayof November 1907.

CHARLES W. WACHTEL.

